Vantage

Privacy-first business dashboard. Get vantage on your shop, your business, your life — across the services you already use, with the data staying on your hardware.

Vantage by Seglamater Services LLC.

The privacy story

Vantage encrypts your business data client-side. Connectors pull from the services you already use (Stripe, Google Workspace, Wave, Plane), encrypt each record on your own device with keys derived from your passphrase, and hand the hub only opaque ciphertext. The hub stores and quota-meters blobs it can never read. See docs/ARCHITECTURE.md for the full design and docs/BRAND.md for the positioning and the claims-discipline that keeps the privacy guarantee truthful.

Repository layout

vantage/
├── apps/
│   ├── vantage-keys/             # Rust crate — client-side cryptography (the showpiece)
│   ├── vantage-connector-sdk/    # Rust crate — connector framework
│   ├── vantage-connector-stripe/ # Stripe data feed
│   ├── vantage-connector-google/ # Gmail + Calendar data feed
│   ├── vantage-connector-wave/   # Wave accounting data feed
│   ├── vantage-connector-plane/  # Plane tickets data feed
│   ├── vantage-hub/              # FastAPI backend — encrypted-blob storage
│   └── vantage-marketing/        # static marketing site
├── docs/                         # ARCHITECTURE.md, BRAND.md, customer guides, schemas
└── vendor/
    └── substrate-connector/      # vendored shared Connector primitive (MIT — see below)

The desktop dashboard client is a separate product component and is not included in this showcase distribution.

Building

The Rust workspace (the crypto crate, the connector SDK, and the four connectors) builds with a standard toolchain:

cargo build --workspace

The hub (apps/vantage-hub) is a Python 3.11 FastAPI service — see its own README.md. The marketing site (apps/vantage-marketing) is static, no build.

License

AGPL-3.0-only — see LICENSE for the full text.

A commercial license is available for use outside the AGPL-3.0 terms — contact Info@Seglamater.com. (Formal commercial-license terms are being finalized.)

Versions previously published under the Business Source License 1.1 remain available under BSL-1.1.

Copyright © 2026 Seglamater Services LLC.

One intentional exception: the connector SDK (apps/vantage-connector-sdk) is licensed MIT, on purpose, so third parties can write and ship their own Vantage connectors under a permissive license. Everything else in Vantage — including the reference connectors (vantage-connector-google / -plane / -stripe / -wave) built on that SDK — is AGPL-3.0-only. vendor/substrate-connector is a third-party dependency under its own MIT license.